Sir Alex was, apparently, so distraught that he delegated all of his post-match media duties to assistant Mike Phelan, who confirmed the 71-year-old was in “no fit state” to discuss the 2-1 defeat on Tuesday night following the red card shown to Nani by Turkish referee Cakir.

As if we needed reminding, the Scot’s reaction confirmed the fire in his belly that he spoke of pre-match when he asked: “How could anyone with an ounce of passion for football in their soul voluntarily walk away from the opportunity to be involved in this kind of occasion?”

Never question Sir Alex was Jose Mourinho’s advice to the press on a night when the world did not stop, as the Portuguese predicted, but almost 300 media representatives from around the globe descended on Old Trafford as these two historic clubs did battle.

And, despite the scoreline, it was also a night when the Scot proved why his Real Madrid counterpart, strongly linked as Sir Alex's potential successor, refers to him as ‘Boss’.

The Scot played his hand perfectly. United sat back and defended with organisation and resilience as, with 11 men, they restricted Real Madrid to very few chances while looking dangerous at the other end.

Never afraid to make a big call, Sir Alex took the hugely bold decision of leaving Wayne Rooney on the substitutes’ bench, which would have been unthinkable a year ago on such a big occasion.

It speaks volumes for Rooney’s diminished role in the team following Robin van Persie’s arrival last summer and raises questions over the striker’s long-term future at United - but it proved to be the right decision.

In a game between two sides so evenly matched, it was the details that would matter.

Danny Welbeck was given the task of tracking back and preventing Xabi Alonso dictating Real Madrid’s passing in the centre of the pitch. The United youngster hassled and harried the former Liverpool man, denying him time to pick his passes and build attacks for the Spanish visitors.

And when in possession, Welbeck stretched the Madrid defence with his energetic and youthful running of the channels, reminiscent of Rooney in his teenage years.

The selection of Ryan Giggs for his 1000th career appearance proved to be about more than sentimentality. The 39-year-old’s experience, positioning and passing were vital for United as they restricted Mourinho’s side and launched swift counter-attacks.

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Over the course of the two legs, Cristiano Ronaldo may have come back to haunt United with two goals, but overall you will rarely see the forward play a more quiet 180 minutes than he did up against the attention of United full-back Rafael and, in the first leg, Phil Jones.

At the Santiago Bernabeu, goalkeeper David De Gea was named man of the match for making a number of crucial saves.

Here, United showed more attacking ambition and had chances to take the lead in the first half as Nemanja Vidic rattled the post with a thumping header before Welbeck was denied from close range by Blancos goalkeeper Diego Lopez.

The hosts fully deserved the opener three minutes after the re-start, an own goal by Sergio Ramos that sent the home crowd wild on a night when the atmosphere at Old Trafford rose to the occasion.

Real Madrid seemed to have few ideas about how to break down United’s stubborn defence, until they were given a man advantage thanks to the red card shown to Nani by Cakir in the 56th minute for a raised foot in a challenge with Alvaro Arbeloa.

Sir Alex may reflect that he could have reacted more quickly to losing a man, but United were always facing an uphill task with 10 men and Madrid took advantage with two goals in three minutes through Luka Modric and then Ronaldo.

United are marching towards a 20th domestic title as they sit pretty at the top of the Premier League with a 12-point lead over Manchester City - but Ferguson is a winner. This will hurt, this was an opportunity lost for the club to win a fourth European crown.

The performance, though, showed that Sir Alex still has the tactical nous to beat any team or manager in Europe, it vindicated the investment in young players as he steers United through a transitional period with his long-term legacy in mind.

Sir Alex will go again next year spurred on by the perceived injustice of an exit when United were the better team over two legs. He proved again on Tuesday night why he is still Boss.